Display panel having improved brightness and method for fabricating the same

A display panel comprising:

• a substrate;
• a gate line which is formed on the substrate and extends substantially in a first direction;
• a data line which is insulated from the gate line and extends substantially in a second direction;
• a thin film transistor which is electrically connected to the gate line and the data line;
• and
• a pixel electrode which is electrically connected to the thin film transistor,
• wherein the thin film transistor comprises:
• a gate electrode group which is formed on the substrate;
• a gate insulating film which is formed on the substrate and the gate electrode group;
• an active layer which is formed on the gate insulating film to at least partially overlap the gate electrode group;
• and
• a source electrode and a drain electrode which are formed on the active layer and the gate insulating film so as to be spaced apart from each other,
• wherein the gate electrode group includes a first gate electrode formed on the substrate, a second gate electrode formed on the first gate electrode, and an insulating layer interposed between the first gate electrode and the second gate electrode,
• wherein the first gate electrode has a reflectivity higher than that of the second gate electrode at wavelengths of light emitted from a light source, and
• wherein a thickness of the first gate electrode is less than that of the second gate electrode.